Smoke-consumer.



No. 893,864. 'PATENTED JULY 21, 1908. P. A."G. NYGAARD & J. H. WARREN.

I SMGKB CONSUMER. APPLIOATIOK FILED HA3. 3. 190a.

UNITED STATES PATENT OFFICE.

PETRUS A. C. NYGAARD, OF JERSEY CITY, AND JOHN H. WARREN, OF NEWARK, NEWJERSEY.

SMOKE-CONSUMER.

Specification of Letters Patent.

Application filed March 3, 1908.

Patented July 21, 1908.

Serial No. 418,918.

To all whom it may concern:

Be it known that we, PETRUs A. 0. NY- GAARD, a subject of the King ofNorway, and JOHN H. VVARREN, a citizen of the United States, residing atJersey City and Newark, respectively, in the counties of Hudson andEssex, respectively, and State of New Jersey,

have invented certain new and useful Improvements in Smoke-Consumers;and We do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to' figures of reference markedthereon, which form a part of this specification.

Our invention relates to an improved smoke-consumer which isparticularly applicable to a locomotive, and the invention is designedto inject air from the atmosphere into the smoke-box of the engine, anddirect this air current against or toward the end of the boiler so as toretard thev products of combustion while they are in the flues,sufficiently to cause their complete consumption so as to eliminate theemission of black smoke from the locomotive. This air current in thesmoke-box is not directed into the stack and is not arranged tointerfere in any way with the exhaust from the cylinders and itsconsequent action on the draft from the boiler, but is designed to havethe nozzles or pipes injecting the air so disposed that they will notinterfere with the current anywhere, except in the fiues of the boiler,as the delay in the flues will insure the consumption, by combustion, ofthe gases and the products of combustion from the fire-box. We prefer tomake the inlet flues adjustable so that the amount of atmosphere to beadmitted to the smoke-box and impinged against the fiues of the boilercan be regulated.

The invention is illustrated in the accompanying drawing, in whichFigure 1 is a section of the smoke-box and the end of a locomotiveboiler provided with our improved attachment, and Fig. 2 is a halfsection and a half elevation of the front of the boiler.

Te illustrate a shell forming a smoke-box 10 which can be of any of theusual forms now employed in locomotive constructions,

and this smoke-box receives the gases and smoke and heat that comes outthrough the is usually used to direct the exhaust up the stack 12. Thisexhaust has a tendency to draw the products of combustion, consisting ofsmoke, gases, sparks and cinders, through the flues 16 shown in Fig. 2,these flues being in they boiler 11 as hereinbefore stated, and thisdraft with its rapidity and force of action increases the efficiency andquick steaming qualities of the engine by establishing this artificialdraft, but it causes a great many unconsumed elements to be admittedfrom the SIl10l Si/&Cl in the way of black smoke,

sparks and cinders, the most objectionable of these being the heavysmoke, and it is to overcome the presence of this smoke that ourinvention has been devised.

We install a pipe or pipes 17, these pipes being preferably two innumber and having their inlets on the outside of the smoke-box so as totake the atmosphere right into the pipes 17 and each pipe 17 is providedwith a nozzle 18 which directs the air against or toward the boiler sothat there is a suction on the pipes 17 toward the smoke-box, and inthis way the current of smoke and gases through the tubes is arrestedand at the same time mingled with air, and we have found by trial thatthe smoke is about entirely consumed and the efficiency and steamingqualities of the boiler are not afiected. We prefer to use dampers 19 onthe outside or anywhere in the pipes 17, and in this way we regulate theamount of air admitted to the smoke-box and impinged against the end ofthe boiler and its flues.

We may use any number of pipes 17, but we prefer to use two as shown,and to dispose the nozzle or ends 18 so that they are equidistantbetween the center of the boiler and the sides thereof so as to give anapproximately even distribution of air against the tubes. We prefer tobend the tubes so as to have them pass around the exhaust and the pathofthe exhaust jet so that there is no interference in any way with thispart of the engine, and there is no attempt to inject the air into theexhaust, but the object is to avoid this exhaust as much as possible anddirect the current without regard to it, but against the products ofcombustion that are issuing from the fines. This arrangement has beenthoroughly tried and found to work satisfactorily in the elimination ofthe smoke nuisance, and the apparatus is also compact and cheap toinstall. It has a further advantage that it does not look cumbersomefrom the outside of the boiler, and does not interfere in any Way withthe efficiency or steaming qualities thereof.

Having thus described our invention, what We claim is 1. In combinationwith a boiler and a smoke-box having a stack thereon, of asmoke-consuming device comprising a pipe or series of pipes passingthrough the walls of the smoke-box and having its inlet in theatmosphere, the outlet of the pipe being disposed between the stack andthe boiler and arranged to ect a current of air against the flues of theboiler.

2. In combination With a boiler and a smoke-box having a stack thereon,of a smoke-consuming device comprising a pipe or series of pipes passingthrough the walls of the smoke-box and having its inlet in theatmosphere, the outlet of the pipe being disposed between the stack andthe boiler and arranged to inject a current of air against the lines ofthe boiler, and means in the pipe for regulating the admission of airtherethrough.

3. In combination with the boiler and a smoke-box having a stackthereon, and an exhaust directed into the stack, of a pipe or series ofpipes passing through the Walls of the smoke-box and adapted to have itsinlet in the atmosphere, and being disposed so that its outlet isadapted to direct a current of air away from the current of the exhauststeam passing into the stack and force the air against the end of theflues of the boiler adjacent to the smoke-box.

In testimony, that we claim the foregoing, we have hereunto set ourhands this 2nd day of March 1908.

PETRUS A. C. NYGAARD. JOHN WARREN Witnesses:

WM. H. CAMFIELD, E. A. PELL.

